I have found this thread useful after buying the GT-BE98 yesterday (the Pro version is not for sale in my region), so I would like to thank everyone for their active contribution.
I am on my 5th Asus router, so I am not new to them, but do not count myself as overly techie with them - so please do not assume knowledge or understanding I most likely do not have. I have had three AiMesh wired setups, (RT-AC68U & RT-AC86U, RT-AX86U & RT-AX82U) and now have the BE98 ethernet linked to the RT-AX86U (I guessed it had slightly more horsepower than the AX82). The AC and AX AiMesh setups worked well, especially the AX one.
I have noticed a few issues with the BE98, some of which I solved, others I have not resolved, or have to workaround. The first issue is of little consequence, but slightly strange. The Wireless page keeps going mostly blank, saying Smart Connect is active (it is not). I have to log-out, then log-in again, to get it to show the Wireless settings again.
Another issue has been already connected wireless clients being dropped, as the password is "incorrect" - it is not incorrect, after a router re-boot, the clients re-connect.
I had the AiMesh node not outputting a 5GHz signal, which I managed to fix by disabling 160Mhz bandwidth on the BE98.
More of an observation than a problem. I noticed that after getting the 5GHz channel working at the node, it behaved differently to the AX setup - where both the router and the node broadcast on the same channel. The BE98's 1st 5GHz band is on one channel, however, the node's 5GHz channel is on another (the same channel as the BE98's 2nd 5GHz band). Turning off the BE98's 2nd 5GHz band, causes the router and node to broadcast on the same channel, just like the AX system did. I have no idea what behaviour is more desirable.
The issue that I cannot currently resolve, is the guest network only appearing on the BE98 router, not on the AX86 node, as it did when I had an AX only AiMesh. It is set to appear on the router and node in the settings, so I assume it is intended to work.
I wonder if a WiFi 7 node would be the eventual happy solution to aim for, if a future firmware update does not smooth these issues.
I am impressed with LAN and WiFi speeds.
As for the aesthetics of this router, that might be an acquired taste, it has been described in my household as a giant upside-down cybernetic spider!
HW version is 1.0